5 green flashes Low
Your boiler has experienced a brief digital hiccup or settings error and is attempting to fix itself automatically.
Technical description: Parameter error on printed circuit board (PCB). Temporary error, will self reset
Typical repair cost: £0-350 (including labour)
DIY fix possible
Wait for the boiler to complete its automatic self-reset processMonitor the display to see if the flashing stops naturallyIf the flashing continues for more than 10 minutes, try turning the boiler off and back on at the fused spur switch
Protect yourself from future repair bills
A boiler cover plan would cover faults like 5 green flashes — no call-out fees, no surprises.
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Parts commonly replaced
- None (Software reset)
- Printed Circuit Board (PCB)
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